CentOS - Dec 2007 - find IP address of device on network based on MAC address

I have a device on my network that is not DHCP and I dont know the IP 
address of it
and it has not method of finding it or changing it unless you know the 
IP address (setable by browser).

Is there a way on linux, based on MAC address, to get the IP of the unit?

Thanks,

Jerry

On Dec 14, 2007 3:02 PM, Jerry Geis <geisj at pagestation.com>
wrote:
> I have a device on my network that is not DHCP and I dont know the IP
> address of it
> and it has not method of finding it or changing it unless you know the
> IP address (setable by browser).
>
> Is there a way on linux, based on MAC address, to get the IP of the unit?
Ping all the ips on your network, then use 'arp' to show the ip and
mac linking. This should give you the information you need.

-- 
During times of universal deceit, telling the truth becomes a revolutionary act.
George Orwell

Jerry Geis wrote:
> I have a device on my network that is not DHCP and I dont know the IP 
> address of it
> and it has not method of finding it or changing it unless you know the 
> IP address (setable by browser).
> 
> Is there a way on linux, based on MAC address, to get the IP of the unit?
You accumulate a table of mac<->ip assocations, but only after 
communicating with something.  arp -a will show the current entries 
(which expire fairly quickly).  You might ping everything in the network 
range, then look for the mac in the arp list.

-- 
   Les Mikesell
    lesmikesell at gmail.com

On Dec 14, 2007 5:02 PM, Jerry Geis <geisj at pagestation.com>
wrote:
> I have a device on my network that is not DHCP and I dont know the IP
> address of it
> and it has not method of finding it or changing it unless you know the
> IP address (setable by browser).
>
> Is there a way on linux, based on MAC address, to get the IP of the unit?
Most TCP/IP devices broadcast some gratuitous arp packet on boot which
you should be able to "tcpdump" on the net

-- 
Marcelo

"?No ser? acaso que ?sta vida moderna est? teniendo m?s de moderna que
de vida?" (Mafalda)

Jerry Geis wrote:
> I have a device on my network that is not DHCP and I dont know the IP 
> address of it
> and it has not method of finding it or changing it unless you know the 
> IP address (setable by browser).
>
> Is there a way on linux, based on MAC address, to get the IP of the unit?

$ nmap -n -sP -PI 192.168.0.1-254 && arp -an | grep -v incomplete